Improvement in shingle-machines



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Warme-W- @anniV ffice Letters Patent No. 85,676, dated J wwwa/ry 5,-1869.

IMPROVEMENT IN' SHINGLE-MACHINES.

The Schedule referred to in these Lettera Patent and making part of thelama.

' reference being had to the accompanying drawings,

which are made part of this specification.

` The subject ofl my invention is a machine for cut ting shingles fromthe bolt or block, adapted to be operated by man-power. A pair of knivesis employed for riving the bolt; said knives moving respectively invertical and oblique planes, so as to cut the shingles, commencingalterately at buts and points.

vThe feeding-mechanism is actuated bythe upward movement of thevertically-cutting knife, and propels the block or bolt each time asufficient distance to have a pair of shingles removed.'- A separatepivoted knifeis employed for edging the shingles.

'Figure 1 is a plan view of my improved machine, a portion of the framebeing broken away to expose the working-parts; Figure 2 is a sidesection; Y

Figure 3 is a transverse section on the line a: x, figs. 1 and 2; andFigure 4; is a detached perspective view of one of the plates employedto guide the riving-knives.

The frame of my machine may consist of a bed-piece, A, of any suitableform, having mounted upon it, in about the relative positions shown,upright rectangular frames B C, longitudinal guides I) D', for guidingthe feeding-plunger and shingle-blocks, a cross-piece, E, spanning saidguides, and a table, F, for supportelevation, partially in vertical ingand guiding the shingles, while they are beingv edged Hinged to the topof the frame B is a pair of levers, G G', which are supported by links HH', from the ends of springs I I', secured to the top of the frame C,and, passing through said frame, are attached to the knives J J', andthrough rods K K', to the levers or treadles L L', by which, inconnection with the springs I I', they are respectively operated. Thesaid levers are pivoted to the bed-piece A of the frame, as

shown in iig. 1.

'The knives J J' are guided by grooves fm m', in plates M M', attachedto the inner faces of the sides of Yframe C, said plates beingconstructed as represented in fig. '4.

N is the plunger, by which the shingle-blocks or bolts are fed to theknives.

It is provided on its under side with a rack, O, which is meshed by apinion, P, keyed to a shaft, Q, which shaft also carries aratchet-wheel, R.

This ratchet-wheel is engaged by pawls S Tthe former of which, S, ispivoted to the end of the reciprocating lever U, and serves tocommunicate motion 'to said ratchet-wheel, and the latter, T, toprevent' backward movement.

a slot, W, in the The lever U, at the opposite end to that to which thepawl S is pivoted, is connected to a verticallysliding rod, V, whosebent upper end V' passes through side of the frame C, and upper end ofthe plate M', a sufficient distance to engage with the knife J in itsupward movement, so as to communicate its motion to the shaft Q, topropel forward the feeding-plunger.

The plunger may be forced back, to allow more blocks to' be placedbefore it, by means of the handle N'.

The spring X holds the shingle-blocks from vertical displacement whilethey are being cut up.

Secured to the end of the table F is a metallic plate or stationaryknife, Y, having pivoted to it a knife, Z, by which the edges oftheshingles, as theycome from the knives J J', are cut at right anglesto their buts,

All the parts being in the positions represented in iig. 2, and oneshingle cut from point to but, removed` by the knife J', the treadle L'is released, allowing the knife J to be returned by the --spring I' tothe top of the frame, and the treadle L is forced down, cutting oif ashingle from but to point, and allowing the bar V, by its gravity, toforce the pawl S up, so as to take hold of another tooth on theratchet-wheel R. This treadle also being released, the knife J isreturned by the spring I toits former position, raising the rod V, andthrough it and the lever U, paWl S and ratchetwheel It, turning theshaft Q a sufficient distance to feed the shingle-block forward thethickness of two shingles,

The treadle L' is then again forced down, cutting off another shinglefrom point to but, and released, and so on until the shingle-blocks inthe machine are cut up, when the pawls S T being raised, the plunger Nmay be forced back, by means of the handle N', and a new supply ofshingle-.blocks placed in front of it through the opening between thefrontend of the guide-piece D' and the frame C.

The shingles, as they come from the knives J J',

are placed on the table F, with their buts against the shoulder f, andwith their edges projecting under the knife '.Z, which cuts their edgesat right angles to their buts.

Having thus described my invention, What I claim as new therein, anddesire to secure by Letters Patent, is .Y y

1. The guide-plates M M', constructed with straight `and oblique groovesm m', and employed in combination with the riving-knives J J',substantially as and for the purpose specified.

l2. The pair of reciprocating knives J J', and the feeding-mechanism ItS U V, operatedV by the returnstroke of one of the said knives, allsubstantially as and for the purposes herein set forth.

ISAAC I. LANCASTER.

I Witnesses: A

Loms PHILIP BRANT, LEVI FAnnswon'rH.

